12:28. Adjustment of wheels and angles of turns
The correct installation of forward wheels is extremely important for good controllability of the car and prevention of premature wear of tires. Before starting check of geometry of systems of steering and a suspension bracket, check pressure in tires, check whether disks of forward wheels are deformed, and also check that connections of the steering drive and a suspension bracket were in good shape, without excessive free wheeling or wear.
Adjustment of wheels includes four factors:
The corner of disorder of wheels is a corner on which forward wheels are rejected from a vertical if to look at them in front of the car. Positive disorder of wheels is a corner (in degrees) on which the top of a wheel is rejected outside from a vertical. Negative disorder of wheels is a corner (in degrees) on which the top of a wheel is rejected inside from a vertical. Adjustment of disorder of wheels is carried out by addition or removal of the washers located between rotary shkvorny the top lever of a suspension bracket and a body. Washers are established on fixing bolts rotary шкворня.
The longitudinal inclination rotary шкворня is a corner between an axis rotary шкворня and the vertical line if to look sideways the car. Positive the inclination rotary шкворня is when the top of a rotary pin is rejected back. The corner of a longitudinal inclination шкворня is regulated the same as a corner of disorder of wheels except that washers need to be added or removed only on a forward or back fixing bolt.
The cross inclination rotary шкворня – is also known as the corner of a cross inclination шкворня is a corner (if to look in front of the car) between a vertical and the imagined line passing through the top fastening of a rack of a suspension bracket and the spherical hinge of the lower lever of a suspension bracket or through the centers of plugs rotary шкворня. This corner is not subject to adjustment.
The convergence of wheels is a size at which the distance between inner forward edges of forward wheels (measured at nave height) differs from distance between rear inner edges of forward wheels.
As it is necessary for measurement of small angles of adjustment of a suspension bracket and steering the special optical equipment and exact instrumentations, check and adjustment of a corner of disorder of wheels, a corner of a longitudinal inclination шкворня and a convergence of wheels needs to be entrusted the experts having the necessary equipment.